Attachable ratchet for die-stocks.



c. H. ARMSTRONG.

ATTAGHABLE RATGHET FOR DIE STOCKS.

APPLICATION FILED SEPT. 29, 1913.

Patented Aug". 11, 1914.

2 SHEETS-SHEET 1.

9 w m6 9mm m M 6 W m 6 wha w m W A TTURIVEVQ THE NORRIS PETERS CO.. PHOTO-LITHQ. WASHINGTON, D. C

U. H. ARMSTRONG. .ATTAGHABLHRATGH-BT FOR DIE STOCKS.

APPLICATION FILED SEPT. 29, 1913.

WITNESSES:

ATTORNEYS mwsw THE NORRIS PETERS CO. PHOTO-LITHO. WASHINGTON. D. (1v

' TED STATES PA if FTQE.

ATTAGHABLE RATCHET FOR DIE-STOCKS.

Specification of Letters Patent.

Patented Aug. 11, 1914.

Application filed September 29, 1913. Serial No. 792,263.

To all whom it may concern: 1

Be it known that 1, CHARLES H. ARM- STRONG, citizen of the United States, and resident of Bridgeport, in the county of Fairfield and Stateof Connecticut, have 1nvented certain new and useful Improvements in Attachable Ratchets for Die- Stocks, of which the following is a spec1fication.

This invention relates to new and useful improvements in attachable ratchets for the stocks whereby the same may be operated by a single lever connection and by short movements of the same, as for instance in close quarters where there would not be room to permit of a complete rotary n10vement of the die-stock and its regular handle connections.

It is the object of my invention to pro vide a ratchet for the above purposes which will be adapted for attachment to several different styles of commercial types of diestocks and especially those manufactured by me; to design the ratchet so that it can be inexpensively manufactured and easlly connected with or disconnected from the die stock, as occasion may require; and further so that it may be used permanently together with the complete stock, or periodlcally as desired.

The invention further resides and consists in the construction and novel combination and arrangement of parts hereinafter more fully described, illustrated in the accompanying drawings, and pointed out in the claims hereto appended, it being understood that various changes in the form, proportion, size and minor details of construction within the scope of the 'claimsmay be resorted to without departure from the spirit or sacrificing any of the advantages of the invention.

Similar characters of reference denote like or corresponding parts throughout the several figures of the accompanying two sheets of drawings forming a part of this spec1- fication, and upon which,

Figure 1, shows a plan view of my improved form of attachable ratchet as it would appear when applied to a die stock of the kind referred to. Fig. 2, is a side elevation of the said ratchet and stock. Fig. 3, is a transverse vertical cross section taken on line 33 of Fig. 1, Fig. 4, is a detached plan view of a circular form of notched stock is rotated as in the cutting disk as employed in my ratchet shown in the preceding figures, and, Fig. 5, is a detached side View of the pawl shown in Figs. 1, 2 and 3.

Referring in detail to the characters of reference marked upon the drawings 6 represents the die stock as a whole, 7 the oppositely disposed attached handles whereby the of a thread.

8 represents the two cutting dies that are adjustably mounted in the stock and secured in said adjusted position by means of screws 9 and 10. The stock is further provided with a bushing 11 which is secured in the centrally arranged round hole through the top of the stock so that said bushing will serve as a guide to supportthe pipe or rod while being threaded. This bushing is made attachable and can be replaced by another difierent size bushing for guiding a difierent size of work through the die.

As will be noted the body of the die stock includes a pair of centrally arranged longitudinally disposed flanged ribs 12 that extend out upon each side of the body of the stock to strengthen and stiffen the structure. A centrally arranged and upwardly disposed hub portion 13 is formed on the top side of the body, through which the before mentioned hole is formed and in which the said bushing 11 is seated.

My improved ratchet comprises a fixed ring like member 14: whose lower annular edge portion is cut away to form lugs 15 and notches 16 to accommodate the ribs of the body of the die stock so that the said lugs may be shouldered against the upwardly and centrally disposed ribs 17 formed on the die stock and on the opposite sides of the upwardly disposed annular portion 13 of said stock. The upper portion of this ring member 14 is extended outward to form a flange that is finished and provided with a series of radially disposed notches 18 that are engaged by the vertically disposed pawl 19 seated in a pocket 20 of the handle portion 21 of the operating member 22. A spring 23 is seated in said pocket to engage and operate the pawl 19 and cause the same to ca gage the respective notches 18 of the disk with each operation of the ratchet. The said handle portion 21 of the operating member 22 of the ratchet is provided with a threaded socket for the attachment of an operating handle,

not shown. An annular recess 24 is formed in the under side of this operating member to receive the flange portion 'of the a manner to overlap and engage the under face of the flange of the fixed member so that said operating member may be rocked or turned upon the said fixed member subject to the action of the engaging pawl. The

engaging end of the pawl 19 is beveled upon one side only as will be noted from the detailed illustration thereof. This pawl when drawn up against the action of the spring is free to be turned half around thus making the shouldered side of the same engage the opposite verticalside wall of the notches of the ratchet, and thus form a means for causing theratchet to operate in either direction. This obviously permits the die stock to be turned on a pipe in the cutting of a thread and then turned off for the detachment of the die stock;

The bushings before referred to maybe insertedin the stock through the ratchet and are secured in position by means of the stop 27 secured to the top side of the ratchet by a screw 28, in a way to be extended down into the central opening of the ratchet against the said bushing.

The ratchet is secured to the die stock by means of a pair of attached clamps 29, one of which is secured to each side of the fixed member of the ratchet by means of removable screws 30 and is provided with ahook like portion that extends cut around and in underthe before mentioned ribs 12 of the die stock in away to firmly secure and fix the member 14: to the said stock and so as to insure the positive connection and operation of the two. In practice the ratchet is connected and disconnected entirely by means of these clamps, though in the operation of the ratchet the lugs 15 before mentioned serve to bear the strain of the operative connections and thus relieve the-clamps in a measure of this strain.

Having thus described my invention what I claim and desire to secure by Letters Patexit is:-'

1. In a ratohet of the class describedthe combination of a fixed "member having an annular flange with a series of radially disposed notches therein, a detachable hooklike clainp secured to said fixed member and adapted to engage a die stock for attachment thereto, a movablejzymember operatively mounted upon the flange of the fixed mem her, a spring actuatedpawl carriedby" the movable member and adapted to-engage the notches in the flange of the fixedmembenf it 2. Ina device of the class described, the combination with a die stock having ribs, of a fixed member having notched; hub portions to engage the ribs andan annular flange with a series of radially disposed notches therein, a detachable hook like clamp secured vto said fixedmember and adapted to engage the ribs of the die-stock, a rotatable member operatively mounted upon thefiange ofthe i fixed member, a spring actuatedpavsd, carried by the movable member and adapted to engage the notches in thefiange of the fixed member. a q

3. In a double acting'ratchetofthe class described, the combination witha die-stock of a fixed member having notched hub portions to engage-the die-stock and provided with an annular notched flange, a pair of oppositely arranged detachable hook like clamps secured to the sides of the fixed'memher and adapted to engageothe'r ribs of the die-stock, a rotatable memberfoperatively mounted upon the flanged member, an ad justablespring actuated pawl carried by the movable member to engage the notches in the flange of the fixed member andadapted to beset to operate the ratchet either forward or backward. p

Signed at Bridgeport in the county of} Fairfield and State of Connecticut this 22nd day of September A. 1)., 1913.

CHARLES 1-1. AR STRONG.

lVitnesses: 7

RF. WAY, Trrno. GoUnrRIeH'r.

Copies of thll patent maybe obtained for five cents each, by addressing the Commissioner of Patent;

Washington, .D. C. a 

